Question

i really need help i will give a medal
Which is the equation of the line?
A.2x – y = 3
B.x + 2y = –6
C.2x + y = –3
D.x – 2y = 6

Answer 1

the graph is on this site http://static.k12.com/calms_media/media/1299500_1300000/1299536/1/ec6e9876c2c49050325cab78f99a4e46e94b1d88/143685.jpg

Answer 2

first of all, you rewrite all the equation on the above in this form y=mx+b, then it should be easy for you to find the slope and the y -int on the graph

Answer 3

I'd suggest you start by finding the vertical and horiz. intercepts of the given graph.

The horizontal intercept is ( what number ? , 0), and the vertical intercept is (0, what number?)

Answer 4

find the slope and the y-int on the graph first

Answer 5

How colorful, chloe! Two different approaches, both equally valid. Take your pick!

Answer 6

the thing is when ever i move to one part of this i completely forget the next >.<

Answer 7

I promise, it gets easier as you continue to practice.

Answer 8

um so the slope would be -3/6?

Answer 9

yap, simplify the slope,

Answer 10

that would be -1/2

Answer 11

or -.5 (-.50)

Answer 12

hold on, the slope should be run downward -3 and leftward -6

Answer 13

no, you don't decimal the slope

Answer 14

oh ok

Answer 15

did you find the slope? now try to find the y-int,

Answer 16

@colorfulchloe : Please note that the graph rises as we move from left to right. In other words, the slope of this line is positive.
Two points on the graph that are easy to read are (6,0) and (0,-3)

You could apply the slope formula here. Note that your result must be a positive number in this example.

Answer 17

Oooh! The Y intercept is -3 and the x is 6

Answer 18

and then the whole thing put together would be -3=(-1/2)6+-3 ?

Answer 19

good job! now, you got slope and the y-int, try to plug in the number in this form y=mx+b, you dont plug in the x-int, just the slope=m and the y-int=b

Answer 20

hold on, look at your slope again, it should be positive, as i had explained before that on the graph, the slope is going down 3 and left 6, so what is the slope ?

Answer 21

oh so it would just be 1/2 and not -1/2

Answer 22

yap, you got it

Answer 23

so write out the hold thing in this form y=mx+b, just plug in the slope and y-int.

Answer 24

that would be -3=1/2*6+(-3) right?

Answer 25

no, you have to write in an equation form, y=mx+b, just plug in the number slope and the y-int. in the question you dont' need the x-int, just ignore that.

Answer 26

so leave where the 6 is "x"

Answer 27

and make it -3=1/2*x+(-3)

Answer 28

You've found that the slope, m, is 1/2, and that the y-intercept, b, is (0,-3).

Merely substitute these values into the equation y = m*x + b.

Answer 29

and then leave 6 out -x intercept-

Answer 30

y=(slope)*x+(y-int)

Answer 31

and then i solve

Answer 32

the equation form of this graph should be y=1/2x-3

Answer 33

Actually, you "solve" for the slope, m, and the y-intercept, b, and then SUBSTITUTE those values into y = m*x + b. Try it here and now, please.

Answer 34

ok i got it sorry to use up your time, both of you.